This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A191196 #4 Mar 30 2012 18:57:31 %S A191196 1,4,5,13,16,17,21,28,40,49,52,53,64,65,69,85,92,121,148,157,160,161, %T A191196 193,196,197,208,209,213,256,257,261,277,284,341,348,364,445,472,481, %U A191196 484,485,580,589,592,593,625,628,629,640,641,645,769,772,773,784,785,789,832,833,837,853,860,1024,1025,1029,1045,1052,1093,1109 %N A191196 Integers in (-1+A191136)/3; contains A191136 as a proper subsequence. %t A191196 (See A191136.) %Y A191196 Cf. A191136;, A191113. %K A191196 nonn %O A191196 1,2 %A A191196 _Clark Kimberling_, May 28 2011